Leaf-turner.



G. N. EVANS.

. LEAF TURNER. APPLICATION FILED NOV: 14. 1916.

1,266,437. Patented May14,1918.

I 2 SHEETSSHEET I.

gay/#327742 G. N. EVANS.

LEAF TURNER.

APPLICATION FILED NOV. 14. l9l6.

1,266,437. Patented May 14, 1918. 2 SHEETS-SHEET 2- MI! E 1 4/70.

GUY N. EVANS, 0F GRINNELL, IOWA.

LEAF-TURNER.

Specification of Letters Patent.

Patented May 1d, 1918.

Application filed November 14, 1916. Serial No. 131,275.

To all whom it may concern:

Be it known that I, GUY N. EVANS, a citizen of the United States, and resident of Grinnell, in the county of Poweshiek and State of Iowa, have invented certain new and useful Improvements in Leaf-Turners, of which the following is a specification.

The present invention relates to changeable exhibitors and has particular reference to new and useful improvements in leaf turners.

An object of my invention is to provide a leaf turner having an improved arrangement of exhibiting mechanism which is simple in construction, efiective in operation and strong and durable.

Another object of my invention is to provide a novel and improved form of carnage for supporting the leaf frame, and an improved mechanism for intermittently imparting rotative movement to the carriage.

A further object of my invention is to provide a leaf turner adapted to exhibit for in stance a plurality of sheets of music successively without a complicated motion transmitting mechanism and provide a device which will accurately move one sheet holding frame at a time to exhibit both sides of a sheet of music.

Other objects and advantages of my improved leaf turner not hereinbefore set forth will appear from the following detailed description and the claims, taken with an inspection of the accompanying drawings, in which:

Figure 1 is a front elevational view of a leaf turner embodying the improvements of my invention;

Fig. 2 is a side elevational view of the same Fig. 3 is a top plan view of the shifting mechanism;

Fig. 4:.is an enlarged fragmental detail view of the frame oscillating member; and

Fig. 5 is a similar view of the carriage for supporting the leaf holding frame.

Referring more particularly to the drawings, wherein similar characters of reference designate like and corresponding parts throughout the various views, 10 designates the base of my improved leaf turner, the same having a rear standard 11 extending upwardly therefrom, said standard 11 having a top laterally extending portion 12 for a purpose which will hereinafter appear.

' A carriage designated 0 its entirety is rotatably mounted between the top portion 12 and the base 10, said carriage comprising a drum portion 13 carried in bearing brackets 14 and 15, a top holding plate 16 and a bottom holding plate 17 the latter having the peripheral edge thereof formed with a plurality of ratchet teeth 18. A bearing shaft 19 extends from the base to the top portion of the main supporting frame, said shaft acting as a rotative support for the drum 13. The bearings 14 and 15 carry a vertically disposed rod 20 for a purpose which will hereinafter appear.

The sheets to be exhibited are placed in frames F, one of which is best shown in Fig. 4:. Referring to Fig. 4 I provide a frame composed of side portions 21 connected at the outer edges as at 22, the portions of the frame being open to permit insertion of a sheet of music. When desired transparencles 23 may be carried by the side portions 21 of the frame so that the sheets may be visible therethrough. The inner end of the frame is connected to a shaft 24:, the free ends of which are engaged rotatively with the plates 16 and 17. The sections of the frame are hingedly connected together on the shaft 24, the connection 22 bein of a detachable character permitting opening of the frame.

A tubular member 25 encircles one portion of the frame F, the outer surface of said tubular member having a pair of ribs in spaced relation thereon, said ribs being adapted to engage, at times, said bar 20, whereby to oscillate the sheet carrying frame.

To partially rotate the carriage C intermittently I provide a pair of levers 28 and 29 pivotally arranged on the shaft 19 beneath the base plate 17 of said carriage. An arm 30 is pivotally mounted on the lower end of the shaft 19 and projects radially of the plate 17, said arm carrying a pair of curved pawls 31 and 32 on its free end, said pawls being pivoted together and to said arm as at 33. The ends of the pawls 31 and 32 are directed inwardly to engage the teeth 18. A pair of links 34 and 35 extend between the levers 28 and 29 and the pawls 31 and 32, respectively. A pair of slidable rods 36 and 37 serve to impart movement to the lovers 28 and 29 to engage said pawls with the teeth and to impart rotative movement to the carriage C. Handles 38 are carried by the free ends of the rods 36 and 37.

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The arm 30 is provided with a pair of enlargements a0 and i1 carrying pins d2 to-be engaged by the levers 28 and 29, so that when one of the levers is moved its movement will be imparted to the arm 30, there being, of course, slight relative movement between the levers 28 and 29 and said arm 30 before said pins begin to act, so that movement of the levers will first engage the pawls with the plate 17 ant "continued movement of one of the levers will cause the arm 30 to shift, moving the plate 17 through a partial rotation.

A pawl member 43 carried by a spring 4A serves to engage the teeth normally and maintain the carriage in the position to which the same has been moved. In operation motion is imparted to one of the levers 28 or 29 by means of the handles 30. The lever moved, will first by virtue of its connecting link, move one of the pawls into engagement with the teeth of the plate 17 Continued movement of the lever will bring the same into engagement with one of the pins carried by the arm 30 actuating said the same to move through an arc of a circle, this movement being transmitted to the plate 17. When the carriage C is moved through a partial rotation, the inner edge of one of the sheet carrying frames will engage the bar 20, said frames being oscillated to exhibit one side of a sheet of music. When all of the sheets have been exhibited the opposite lever to the one first actuated may be moved to return the sheet to normal position. This will also be found useful in the event that it is necessary for instance to play one sheet of music twice. Any'number of sh'eets may be employed by increasing the number of holding frames F. Of course, I do not limit my invention to any specified use, in view of the fact that the operating mechanism and arrangement of frames may be altered for adaptation to any use to which changeableexhibitors are usually put.

The part the -plate 17, as this part as is a spring pressed pawl, that is so associated with thetoothed edge of the plates, that upon rotation of 'said'plates by the operation of the pawls and levers, this part will be forced outwardly, to allow said base to move, and when the base-or plate 17 has reached the desired position, the pawl 4:3 will once more cooperatively engage the same to lock it normally in that position.

From the above description taken in -connection with the accompanying .drawings, it is 'th'ou ghtthat a clear and comprehensive understanding of the construction, operation and'a'dvanta ges 'ofmy invention may be have shown and described the device er'nb'orlying a specific structure,

. sheets, an arm,

43 would not prevent rotation of base havinga standard,

I desire that it be understood that such changes may be made in such structure as do not depart from the spirit and scope of the invention as claimed.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a leaf turner, the combination of a base having a standard, a carriage rotatable on said base, a, plurality of sheet holding frames oscillatable in said carriage, means on the base to engage said frames to shift the same when the carriage is partially rotated, said carriage having a toothed base portion, a plurality of pawls intermittently and alternatively engageable with said toothed base, and a plurality of oppositely arranged lever members to intermittently ind alternatively actuate said pawl memers.

2. In a leaf turner, the combination of a base having a standard, a carriage rotatable on said base, a plurality of sheet holding frames oscillatable in said carriage, means on the base to engage said frames to shift the same when the carriage is partially rotated, a pair of lever members oppositely arranged and mounted on said base beneath said carriage, said carriage having a base portion provided with peripherally arranged a pair of pawl members carried by the free end thereof, said pawl members being adapted to engage the toothed periphery of said carriage base, a pair of levers, link members connecting said levers with said pawls, means to connect said levers with said arms to shift the same, said levers being adapted for actuation whereby to intermittently actuate the pawl members to partially rotate said carriage and exhibit the opposite sides of sheet members carried in said frames.

3. In a leaf turner, the combination of a base having a standard, a carriage rotatable on said base, a plurality of sheet holding frames oscillatable in said carriage, means on the base to engage said frames to shift the same when the carriage is partially rotated, an arm pivotally mounted on said base and having a pair of pivotally mounted pawl members on the free end thereof, the base of said carriage being provided with peripheral ratchet teeth to be engaged by said pawls, a pair of levers, link members connecting-said levers with said pawls, a pair 'of'rod members connected with the free ends I of said levers to actuate the same, and means to maintain said carnage in a position to whlch the same 1S shifted, said pawl memto said carriage.

4. In a leaf turn r, e ombina ion e a a carriage rotatable on said base, a plurality of sheet holding frames oscillatable in said carriage, means on the base to engage said frames to shift the same When the carriage is partially rotated, said carriage having a toothed base portion, a plurality of pawls intermittently and alternatively engageable With said toothed base, a plurality of oppositely arranged levers to intermittently and alternatively actuate said paWls, and a spring pressed pawl engageable With the toothed base portion to normally look said carriage.

In testimony whereof, I affix my signature hereto.

GUY N. EVANS.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C." 

